An extended undo functionality would have been handy sometimes. Like, having an eraser that would revert any pixel I have placed myself (and that is still visible) to what it was before while adding one to my pixel store until that is filled. That way I would be able to move or correct things without having to wait (possibly twice as long) for the counter.
What’s the reasoning for this? One of my use cases would have been that I had started to draw something then realised that someone else was drawing next to me, so I’d wish I could have a way to quickly move my thing out of the way. Another one was with a collaboration on a template and in the end trying some adjustments because the template was unsharp. Which was essentially overdrawing other people’s pixels just to see how it looks, then perhaps reverting some of those.